List of Prime Ministers of the United Kingdom

Portrait		Prime Minister (Birth–Death)	Term of office & mandate[n 3] Duration in years and days			Ministerial portfolios held as Prime Minister	Party	Ministry	Monarch (Reign)	Ref
		The Right Honourable Robert Walpole 1st Earl of Orford KGKBPC MP for King's Lynn[n 4] (1676–1745)	4 April 1721	11 February 1742	1722	First Lord of the Treasury Chancellor of the Exchequer Leader of the House of Commons[n 5]	Whig	Walpole–Townshend	George I (1714–1727)	[33]
					1727				George II (1727–1760)
					1734			Walpole
					1741
			20 years and 314 days
		The Right Honourable Spencer Compton 1st Earl of Wilmington KGKBPC (1673–1743)	16 February 1742	2 July 1743	—	First Lord of the Treasury	Whig	Carteret		[34]
			1 year and 137 days[†]
​		The Right Honourable Henry Pelham FRS MP for Sussex (1694–1754)	27 August 1743	6 March 1754	—	First Lord of the Treasury Chancellor of the Exchequer Leader of the House of Commons	Whig			[35]
								Broad Bottom I
					1747			Broad Bottom II
			10 years and 192 days[†]
		His Grace Thomas Pelham-Holles 1st Duke of Newcastle KGPCFRS (1693–1768)	16 March 1754	16 November 1756	1754	First Lord of the Treasury Leader of the House of Lords	Whig	Newcastle I		[36]
			2 years and 246 days
		His Grace William Cavendish 4th Duke of Devonshire KGPC (1720–1764)	16 November 1756	25 June 1757	—	First Lord of the Treasury[n 6] Leader of the House of Lords	Whig	Pitt–Devonshire		[38]
​								1757 Caretaker
			222 days
		His Grace Thomas Pelham-Holles 1st Duke of Newcastle KGPCFRS (1693–1768)	2 July 1757	26 May 1762	1761	First Lord of the Treasury Leader of the House of Lords	Whig	Pitt–Newcastle		[36]
									George III (1760–1820)
			4 years and 329 days
		The Right Honourable John Stuart 3rd Earl of Bute KGPC (1713–1792)	26 May 1762	8 April 1763	—	First Lord of the Treasury Leader of the House of Lords	Tory	Bute (Tory–Whig)		[39]
			318 days
		The Right Honourable George Grenville MP for Buckingham (1712–1770)	16 April 1763	13 July 1765	—	First Lord of the Treasury Chancellor of the Exchequer Leader of the House of Commons	Whig (Grenvillite)	Grenville (Whig–Tory)		[40]
			2 years and 89 days
		The Most Honourable Charles Watson-Wentworth 2nd Marquess of Rockingham KGPCFRS (1730–1782)	13 July 1765	30 July 1766	—	First Lord of the Treasury Leader of the House of Lords	Whig (Rockinghamite)	Rockingham I		[41]
			1 year and 18 days
		The Right Honourable William Pitt 1st Earl of Chatham PCFRS MP for Bath[n 7] (1708–1778)	30 July 1766	14 October 1768	1768	Lord Keeper of the Privy Seal	Whig (Chathamite)	Chatham (Whig–Tory)		[43]
			2 years and 77 days
		His Grace Augustus FitzRoy 3rd Duke of Grafton KGPC (1735–1811)	14 October 1768	28 January 1770	—	First Lord of the Treasury Leader of the House of Lords	Whig (Chathamite)	Grafton		[44]
			1 year and 107 days
		The Right Honourable Frederick North Lord North KG MP for Banbury (1732–1792)	28 January 1770	22 March 1782	1774	First Lord of the Treasury Chancellor of the Exchequer Leader of the House of Commons	Tory (Northite)	North		[45]
					1780
			12 years and 54 days
		The Most Honourable Charles Watson-Wentworth 2nd Marquess of Rockingham KGPCFRS (1730–1782)	27 March 1782	1 July 1782	—	First Lord of the Treasury Leader of the House of Lords	Whig (Rockinghamite)	Rockingham II		[41]
			97 days[†]
		The Right Honourable William Petty 2nd Earl of Shelburne KGPC (1737–1805)	4 July 1782	2 April 1783	—	First Lord of the Treasury Leader of the House of Lords	Whig (Chathamite)	Shelburne (Whig–Tory)		[46]
			273 days
		His Grace William Cavendish-Bentinck 3rd Duke of Portland PCFRS (1738–1809)	2 April 1783	19 December 1783	—	First Lord of the Treasury Leader of the House of Lords	Whig	Fox–North		[47]
			262 days
		The Right Honourable William Pitt the Younger MP for Appleby → Cambridge University[n 8] (1759–1806)	19 December 1783	14 March 1801	1784	First Lord of the Treasury Chancellor of the Exchequer Leader of the House of Commons	Tory (Pittite)	Pitt I		[48]
					1790
					1796
			17 years and 86 days
		The Right Honourable Henry Addington MP for Devizes (1757–1844)	17 March 1801	10 May 1804	1801	First Lord of the Treasury Chancellor of the Exchequer Leader of the House of Commons	Tory (Addingtonian)	Addington		[49]
					1802
			3 years and 55 days
		The Right Honourable William Pitt the Younger MP for Cambridge University (1759–1806)	10 May 1804	23 January 1806	—	First Lord of the Treasury Chancellor of the Exchequer Leader of the House of Commons	Tory (Pittite)	Pitt II		[48]
			1 year and 259 days[†]
		The Right Honourable William Grenville 1st Baron Grenville PCPC (Ire) (1759–1834)	11 February 1806	31 March 1807	1806	First Lord of the Treasury Leader of the House of Lords	Whig	All the Talents (Whig–Tory)		[50]
			1 year and 49 days
		His Grace William Cavendish-Bentinck 3rd Duke of Portland KGPCFRS (1738–1809)	31 March 1807	4 October 1809	1807	First Lord of the Treasury	Tory (Pittite)	Portland II		[47]
			2 years and 188 days
		The Right Honourable Spencer Perceval KC MP for Northampton (1762–1812)	4 October 1809	11 May 1812	—	First Lord of the Treasury Chancellor of the Exchequer Chancellor of the Duchy of Lancaster Leader of the House of Commons	Tory (Pittite)	Perceval		[51]
			2 years and 221 days[‡]
		The Right Honourable Robert Jenkinson 2nd Earl of Liverpool KGPCFRS (1770–1828)	8 June 1812	9 April 1827	1812	First Lord of the Treasury Leader of the House of Lords	Tory (Pittite)	Liverpool		[52]
					1818
					1820				George IV (1820–1830)
					1826
			14 years and 306 days
		The Right Honourable George Canning FRS MP for Seaford (1770–1827)	10 April 1827	8 August 1827	—	First Lord of the Treasury Chancellor of the Exchequer Leader of the House of Commons	Tory (Canningite)	Canning (Canningite–Whig)		[53]
			121 days[†]
		The Right Honourable Frederick John Robinson 1st Viscount Goderich PC (1782–1859)	31 August 1827	21 January 1828	—	First Lord of the Treasury Leader of the House of Lords	Tory (Canningite)	Goderich		[54]
			144 days
		Field MarshalHis Grace Arthur Wellesley 1st Duke of Wellington KGGCBGCHPC (1769–1852)	22 January 1828	16 November 1830	1830	First Lord of the Treasury Leader of the House of Lords	Tory	Wellington–Peel		[55]
									William IV (1830–1837)
			2 years and 299 days
		The Right Honourable Charles Grey 2nd Earl Grey KGPC (1764–1845)	22 November 1830	9 July 1834	1831	First Lord of the Treasury Leader of the House of Lords	Whig	Grey		[56]
					1832– 1833
			3 years and 230 days
		The Right Honourable William Lamb 2nd Viscount Melbourne PC (1779–1848)	16 July 1834	14 November 1834	—	First Lord of the Treasury Leader of the House of Lords	Whig	Melbourne I		[57]
			122 days
		Field MarshalHis Grace Arthur Wellesley 1st Duke of Wellington KGGCBGCHPC (1769–1852)	14 November 1834	10 December 1834	—	First Lord of the Treasury Sec. of State for the Home Department Sec. of State for Foreign Affairs Sec. of State for War and the Colonies Leader of the House of Lords	Tory	Wellington Caretaker		[55]
			27 days
		The Right Honourable Sir Robert Peel BtFRS MP for Tamworth (1788–1850)	10 December 1834	8 April 1835	—	First Lord of the Treasury Chancellor of the Exchequer Leader of the House of Commons	Conservative	Peel I		[58]
			120 days
		The Right Honourable William Lamb 2nd Viscount Melbourne PCFRS (1779–1848)	18 April 1835	30 August 1841	1835	First Lord of the Treasury Leader of the House of Lords	Whig	Melbourne II		[57]
					1837				Victoria (1837–1901)
			6 years and 135 days
		The Right Honourable Sir Robert Peel BtFRS MP for Tamworth (1788–1850)	30 August 1841	29 June 1846	1841	First Lord of the Treasury Leader of the House of Commons	Conservative	Peel II		[58]
			4 years and 304 days
		The Right Honourable Lord John Russell FRS MP for the City of London (1792–1878)	30 June 1846	21 February 1852	1847	First Lord of the Treasury Leader of the House of Commons	Whig	Russell I		[59]
			5 years and 237 days
		The Right Honourable Edward Smith-Stanley 14th Earl of Derby PC (1799–1869)	23 February 1852	17 December 1852	1852	First Lord of the Treasury Leader of the House of Lords	Conservative	Who? Who?		[60]
			299 days
		The Right Honourable George Hamilton-Gordon 4th Earl of Aberdeen KTFRSEFRSPCFSA Scot (1784–1860)	19 December 1852	30 January 1855	—	First Lord of the Treasury Leader of the House of Lords	Peelite	Aberdeen (Peelite–Whig)		[61]
			2 years and 43 days
		The Right Honourable Henry John Temple 3rd Viscount Palmerston KGGCBPCFRS MP for Tiverton (1784–1865)	6 February 1855	19 February 1858	1857	First Lord of the Treasury Leader of the House of Commons	Whig	Palmerston I		[62]
			3 years and 14 days
		The Right Honourable Edward Smith-Stanley 14th Earl of Derby PC (1799–1869)	20 February 1858	11 June 1859	—	First Lord of the Treasury Leader of the House of Lords	Conservative	Derby–Disraeli II		[60]
			1 year and 112 days
		The Right Honourable Henry John Temple 3rd Viscount Palmerston KGGCBPCFRS MP for Tiverton (1784–1865)	12 June 1859	18 October 1865	1859	First Lord of the Treasury Leader of the House of Commons	Liberal	Palmerston II		[62]
					1865
			6 years and 129 days[†]
		The Right Honourable John Russell 1st Earl Russell KGPCFRS (1792–1878)	29 October 1865	26 June 1866	—	First Lord of the Treasury Leader of the House of Lords	Liberal	Russell II		[59]
			241 days
		The Right Honourable Edward Smith-Stanley 14th Earl of Derby KGPC (1799–1869)	28 June 1866	25 February 1868	—	First Lord of the Treasury Leader of the House of Lords	Conservative	Derby–Disraeli III		[60]
			1 year and 243 days
		The Right Honourable Benjamin Disraeli MP for Buckinghamshire (1804–1881)	See also § Premierships:1			First Lord of the Treasury Leader of the House of Commons	Conservative			[63]
			27 February 1868	1 December 1868	—
			279 days
		The Right Honourable William Ewart Gladstone FSS MP for Greenwich (1809–1898)	See also § Premierships:2			First Lord of the Treasury Leader of the House of Commons Chancellor of the Exchequer[n 9]	Liberal	Gladstone I		[65]
			3 December 1868	17 February 1874	1868
			5 years and 77 days
		The Right Honourable Benjamin Disraeli 1st Earl of Beaconsfield KGPCFRS MP for Buckinghamshire[n 10] (1804–1881)	See also § Premierships:1			First Lord of the Treasury Leader of the House of Commons[n 11] Lord Keeper of the Privy Seal[n 12] Leader of the House of Lords[n 13]	Conservative	Disraeli II		[63]
			20 February 1874	21 April 1880	1874
			6 years and 62 days
		The Right Honourable William Ewart Gladstone FRSFSS MP for Midlothian (1809–1898)	See also § Premierships:2			First Lord of the Treasury Leader of the House of Commons Chancellor of the Exchequer[n 14]	Liberal	Gladstone II		[65]
			23 April 1880	9 June 1885	1880
			5 years and 48 days
		The Most Honourable Robert Gascoyne-Cecil 3rd Marquess of Salisbury KGPCFRSDL (1830–1903)	23 June 1885	28 January 1886	—	Sec. of State for Foreign Affairs Leader of the House of Lords	Conservative	Salisbury I		[68]
			220 days
		The Right Honourable William Ewart Gladstone FRSFSS MP for Midlothian (1809–1898)	See also § Premierships:2			First Lord of the Treasury Lord Keeper of the Privy Seal Leader of the House of Commons	Liberal	Gladstone III		[65]
			1 February 1886	20 July 1886	1885
			170 days
		The Most Honourable Robert Gascoyne-Cecil 3rd Marquess of Salisbury KGPCFRSDL (1830–1903)	25 July 1886	11 August 1892	1886	Leader of the House of Lords First Lord of the Treasury[n 15] Sec. of State for Foreign Affairs[n 16]	Conservative	Salisbury II		[68]
			6 years and 18 days
		The Right Honourable William Ewart Gladstone FRSFSS MP for Midlothian (1809–1898)	See also § Premierships:2			First Lord of the Treasury Lord Keeper of the Privy Seal Leader of the House of Commons	Liberal	Gladstone IV		[65]
			15 August 1892	2 March 1894	1892
			1 year and 200 days
		The Right Honourable Archibald Primrose 5th Earl of Rosebery KGPCFRS (1847–1929)	5 March 1894	22 June 1895	—	First Lord of the Treasury Lord President of the Council Leader of the House of Lords	Liberal	Rosebery		[71]
			1 year and 110 days
		The Most Honourable Robert Gascoyne-Cecil 3rd Marquess of Salisbury KGPCFRSDL (1830–1903)	25 June 1895	11 July 1902	1895	Leader of the House of Lords Sec. of State for Foreign Affairs[n 17] Lord Keeper of the Privy Seal[n 18]	Conservative	Salisbury III (Con.–Lib.U.)		[68]
					1900
			7 years and 17 days						Edward VII (1901–1910)
		The Right Honourable Arthur Balfour FRSDL MP for Manchester East (1848–1930)	11 July 1902	5 December 1905	—	First Lord of the Treasury Leader of the House of Commons	Conservative	Balfour		[72]
			3 years and 148 days
		The Right Honourable Sir Henry Campbell-Bannerman GCB MP for Stirling Burghs (1836–1908)	5 December 1905	7 April 1908	1906	First Lord of the Treasury Leader of the House of Commons	Liberal	Campbell-Bannerman		[73]
			2 years and 125 days
		The Right Honourable Herbert Henry Asquith KCFRS MP for East Fife (1852–1928)	7 April 1908	7 December 1916	Jan.1910	First Lord of the Treasury Leader of the House of Commons Sec. of State for War[n 19]	Liberal	Asquith I		[75]
					Dec.1910				George V (1910–1936)
					—			Asquith II (Lib.–Con.–et al.)
			8 years and 243 days
		The Right Honourable David Lloyd George OM MP for Caernarvon Boroughs (1863–1945)	7 December 1916	19 October 1922	—	First Lord of the Treasury	Liberal	Lloyd George War		[76]
					1918			Lloyd George II (Lib.–Con.)
			5 years and 318 days
		The Right Honourable Bonar Law MP for Glasgow Central (1858–1923)	23 October 1922	20 May 1923	1922	First Lord of the Treasury Leader of the House of Commons	Conservative (Scot.U.)	Law		[77]
			210 days
		The Right Honourable Stanley Baldwin JP MP for Bewdley (1867–1947)	23 May 1923	16 January 1924	—	First Lord of the Treasury Leader of the House of Commons Chancellor of the Exchequer[n 20]	Conservative	Baldwin I		[78]
			239 days
		The Right Honourable Ramsay MacDonald MP for Aberavon (1866–1937)	22 January 1924	4 November 1924	1923	First Lord of the Treasury Leader of the House of Commons Sec. of State for Foreign Affairs	Labour	MacDonald I		[79]
			288 days
		The Right Honourable Stanley Baldwin JPFRS MP for Bewdley (1867–1947)	4 November 1924	5 June 1929	1924	First Lord of the Treasury Leader of the House of Commons	Conservative	Baldwin II		[78]
			4 years and 214 days
		The Right Honourable Ramsay MacDonald FRS MP for Seaham (1866–1937)	5 June 1929	7 June 1935	1929	First Lord of the Treasury Leader of the House of Commons	Labour	MacDonald II		[79]
					—		National Labour	National I (N.Lab.–Con.–et al.)
					1931			National II
			6 years and 3 days
​		The Right Honourable Stanley Baldwin JPFRS MP for Bewdley (1867–1947)	7 June 1935	28 May 1937	1935	First Lord of the Treasury Leader of the House of Commons	Conservative	National III (Con.–N.Lab.–et al.)		[78]
									Edward VIII (1936)
									George VI (1936–1952)
			1 year and 356 days
		The Right Honourable Neville Chamberlain FRS MP for Birmingham Edgbaston (1869–1940)	28 May 1937	10 May 1940	—	First Lord of the Treasury Leader of the House of Commons	Conservative	National IV		[80]
​								Chamberlain War
			2 years and 349 days
		The Right Honourable Winston Churchill CHTDFRS MP for Epping (1874–1965)	10 May 1940	26 July 1945	—	First Lord of the Treasury Minister of Defence Leader of the House of Commons[n 21]	Conservative	Churchill War (All parties)		[82]
​								Churchill Caretaker (Con.–Lib.N.)
			5 years and 78 days
		The Right Honourable Clement Attlee CHFRS MP for Limehouse → Walthamstow West[n 22] (1883–1967)	26 July 1945	26 October 1951	1945	First Lord of the Treasury Minister of Defence[n 23]	Labour	Attlee I		[84]
					1950			Attlee II
			6 years and 93 days
		The Right Honourable Sir Winston Churchill KGOMCHTDDLFRSRA MP for Woodford (1874–1965)	26 October 1951	7 April 1955	1951	First Lord of the Treasury Minister of Defence[n 24]	Conservative	Churchill III		[82]
			3 years and 163 days						Elizabeth II (1952–present)
		The Right Honourable Sir Anthony Eden KGMC MP for Warwick & Leamington (1897–1977)	7 April 1955	10 January 1957	1955	First Lord of the Treasury	Conservative	Eden		[85]
			1 year and 280 days
		The Right Honourable Harold Macmillan FRS MP for Bromley (1894–1986)	10 January 1957	18 October 1963	—	First Lord of the Treasury	Conservative	Macmillan I		[86]
					1959			Macmillan II
			6 years and 283 days
		The Right Honourable Sir Alec Douglas-Home KT MP for Kinross & Western Perthshire[n 25] (1903–1995)	18 October 1963	16 October 1964	—	First Lord of the Treasury	Conservative (Scot.U.)	Douglas-Home		[88]
			364 days
		The Right Honourable Harold Wilson OBEFRS MP for Huyton (1916–1995)	16 October 1964	19 June 1970	1964	First Lord of the Treasury Minister for the Civil Service[n 26]	Labour	Wilson I		[90]
					1966			Wilson II
			5 years and 247 days
		The Right Honourable Edward Heath MBE MP for Bexley → Sidcup[n 27] (1916–2005)	19 June 1970	4 March 1974	1970	First Lord of the Treasury Minister for the Civil Service	Conservative	Heath		[91]
			3 years and 259 days
		The Right Honourable Harold Wilson OBEFRS MP for Huyton (1916–1995)	4 March 1974	5 April 1976	Feb.1974	First Lord of the Treasury Minister for the Civil Service	Labour	Wilson III		[90]
					Oct.1974			Wilson IV
			2 years and 33 days
		The Right Honourable James Callaghan MP for Cardiff South East (1912–2005)	5 April 1976	4 May 1979	—	First Lord of the Treasury Minister for the Civil Service	Labour	Callaghan		[92]
			3 years and 30 days
		The Right Honourable Margaret Thatcher FRSFRIC MP for Finchley (1925–2013)	See also § Premierships:3			First Lord of the Treasury Minister for the Civil Service	Conservative	Thatcher I		[93]
			4 May 1979	28 November 1990	1979
					1983			Thatcher II
					1987			Thatcher III
			11 years and 209 days
		The Right Honourable John Major MP for Huntingdon (born 1943)	28 November 1990	2 May 1997	—	First Lord of the Treasury Minister for the Civil Service	Conservative	Major I		[94]
					1992			Major II
			6 years and 156 days
		The Right Honourable Tony Blair MP for Sedgefield (born 1953)	See also § Premierships:4			First Lord of the Treasury Minister for the Civil Service	Labour	Blair I		[95]
			2 May 1997	27 June 2007	1997
					2001			Blair II
					2005			Blair III
			10 years and 57 days
		The Right Honourable Gordon Brown MP for Kirkcaldy & Cowdenbeath (born 1951)	See also § Premierships:5			First Lord of the Treasury Minister for the Civil Service	Labour	Brown		[96]
			27 June 2007	11 May 2010	—
			2 years and 319 days
		The Right Honourable David Cameron MP for Witney (born 1966)	See also § Premierships:6			First Lord of the Treasury Minister for the Civil Service	Conservative	Cameron–Clegg (Con.–L.D.)		[97]
			11 May 2010	13 July 2016	2010
					2015			Cameron II
			6 years and 64 days
		The Right Honourable Theresa May MP for Maidenhead (born 1956)	See also § Premierships:7			First Lord of the Treasury Minister for the Civil Service	Conservative	May I		[98]